src/drivers/ata.c

@@ -1,27 +1,12 @@
+// ATA PIO driver implementation
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include <stdint.h>
 #include "../kernel/io.h"
 #include "../libc/stdio.h"
-
-#define ATA_PRIMARY_IO 		0x1F0
-#define ATA_PRIMARY_CTRL 	0x3F6
-#define ATA_CMD_READ_PIO	0x20
-#define ATA_CMD_WRITE_PIO 	0x30
-#define ATA_IDENTIFY 		0xEC
-
-#define ATA_REG_DATA 		0x00
-#define ATA_REG_ERROR 		0x01
-#define ATA_REG_SECCOUNT0 	0x02
-#define ATA_REG_LBA0 		0x03
-#define ATA_REG_LBA1 		0x04
-#define ATA_REG_LBA2 		0x05
-#define ATA_REG_HDDEVSEL 	0x06
-#define ATA_REG_COMMAND 	0x07
-#define ATA_REG_STATUS 		0x07
-
-#define ATA_SR_BSY 		0x80
-#define ATA_SR_DRDY 		0x40
-#define ATA_SR_DRQ 		0x08
-#define ATA_SR_ERR 		0x01
+#include "ata.h"
 
 static inline uint16_t inw(uint16_t port) {
     uint16_t result;

src/drivers/ata.h

@@ -1,8 +1,34 @@
+// ATA PIO driver implementation header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef ATA_H
 #define ATA_H
 
 #include <stdint.h>
 
+#define ATA_PRIMARY_IO 		0x1F0
+#define ATA_PRIMARY_CTRL 	0x3F6
+#define ATA_CMD_READ_PIO	0x20
+#define ATA_CMD_WRITE_PIO 	0x30
+#define ATA_IDENTIFY 		0xEC
+
+#define ATA_REG_DATA 		0x00
+#define ATA_REG_ERROR 		0x01
+#define ATA_REG_SECCOUNT0 	0x02
+#define ATA_REG_LBA0 		0x03
+#define ATA_REG_LBA1 		0x04
+#define ATA_REG_LBA2 		0x05
+#define ATA_REG_HDDEVSEL 	0x06
+#define ATA_REG_COMMAND 	0x07
+#define ATA_REG_STATUS 		0x07
+
+#define ATA_SR_BSY 		    0x80
+#define ATA_SR_DRDY 		0x40
+#define ATA_SR_DRQ 		    0x08
+#define ATA_SR_ERR 		    0x01
+
 void ata_read_sector(uint32_t lba, uint8_t* buffer);
 void test_read_sector();
 

src/drivers/framebuffer.c

@@ -1,11 +1,16 @@
+// Framebuffer driver
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include <stdint.h>
 #include "framebuffer.h"
 #include "serial.h"
 #include "../kernel/system.h"
 
-//extern uint32_t *g_framebuffer;
+extern char* framebuffer;
 
-void putpixel(uint32_t* fb, int pitch, int bpp, int x, int y, uint32_t color) // framebuffer pointer, x, y, color
+void putpixel(uint32_t* fb, int pitch, int bpp, int x, int y, uint32_t color)
 {
 	if (bpp == 32) {
 		uint32_t* pixel_addr = (uint32_t*)((uint8_t*)fb + y * pitch + x *(bpp / 8));
@@ -13,14 +18,6 @@ void putpixel(uint32_t* fb, int pitch, int bpp, int x, int y, uint32_t color) //
 	}
 }
 
-extern char* framebuffer;
-extern int scanline;
-extern char _binary_include_fonts_UniCyr_8x16_psf_start;
-uint16_t* unicode;
-
-#define PIXEL uint32_t
-
-// Character, cursor X, cursor Y, foreground, background
 void draw_char(unsigned short int c, int cx, int cy, uint32_t fg, uint32_t bg)
 {
 	PSF_font *font = (PSF_font*)&_binary_include_fonts_UniCyr_8x16_psf_start;

src/drivers/framebuffer.h

@@ -1,8 +1,19 @@
+// Framebuffer driver header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef FRAMEBUFFER_H
 #define FRAMEBUFFER_H
 
 #include <stdint.h>
 
+extern int scanline;
+extern char _binary_include_fonts_UniCyr_8x16_psf_start;
+uint16_t* unicode;
+
+#define PIXEL uint32_t
+
 #define PSF1_FONT_MAGIC 0x0436
 
 typedef struct {
@@ -24,7 +35,6 @@ typedef struct {
     uint32_t width;         /* width in pixels */
 } PSF_font;
 
-//extern const unsigned char font[512][64];
 void putpixel(uint32_t* fb, int pitch, int bpp, int x, int y, uint32_t color); 
 void draw_char(unsigned short int c, int cx, int cy, uint32_t fg, uint32_t bg);
 void scroll();

src/drivers/kb.c

@@ -1,13 +1,12 @@
+// Keyboard driver
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "../kernel/io.h"
 #include "../libc/stdio.h"
 #include "../kernel/system.h"
-
-#define KEYBOARD_BUFFER_SIZE 256
-
-#define LEFT_SHIFT_PRESSED 0x2A
-#define RIGHT_SHIFT_PRESSED 0x36
-#define LEFT_SHIFT_RELEASED 0xAA
-#define RIGHT_SHIFT_RELEASED 0xB6
+#include "kb.h"
 
 unsigned char kbdus[128] =
 {

src/drivers/kb.h

@@ -1,6 +1,18 @@
+// Keyboard driver header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef KB_H
 #define KB_H
 
+#define KEYBOARD_BUFFER_SIZE    256
+
+#define LEFT_SHIFT_PRESSED      0x2A
+#define RIGHT_SHIFT_PRESSED     0x36
+#define LEFT_SHIFT_RELEASED     0xAA
+#define RIGHT_SHIFT_RELEASED    0xB6
+
 char keyboard_getchar();
 
 #endif

src/drivers/serial.c

@@ -1,3 +1,8 @@
+// Serial I/O driver
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "../kernel/io.h"
 #include "serial.h"
 #include "../libc/stdio.h"
@@ -279,4 +284,3 @@ void serial_printf(int errlevel, const char* fmt, ...)
   }
   serial_puts("\n");
 }
-

src/drivers/serial.h

@@ -1,5 +1,10 @@
-#ifndef INCLUDE_SERIAL_H
-#define INCLUDE_SERIAL_H
+// Serial I/O driver header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
+#ifndef SERIAL_H
+#define SERIAL_H
 
 #define PORT 0x3f8 //COM1
 
@@ -9,4 +14,5 @@ void write_serial(const char a);
 void serial_puts(const char* str);
 void log(const char* str, const int errlevel);
 void serial_printf(int errlevel, const char* fmt, ...);
+
 #endif

src/drivers/timer.c

@@ -1,3 +1,8 @@
+// Programmable Interval Timer channel 0 driver
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "../kernel/system.h"
 #include "../libc/stdio.h"
 

src/kernel/gdt.c

@@ -1,22 +1,11 @@
+// Global descriptor table setup
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "gdt.h"
 #include "../libc/stdio.h"
 
-struct gdt_entry
-{
-	unsigned short limit_low;
-	unsigned short base_low;
-	unsigned char base_middle;
-	unsigned char access;
-	unsigned char granularity;
-	unsigned char base_high;
-} __attribute__((packed));
-
-struct gdt_ptr
-{
-	unsigned short limit;
-	unsigned int base;
-} __attribute__((packed));
-
 struct gdt_entry gdt[3];
 struct gdt_ptr gp;
 

src/kernel/gdt.h

@@ -1,8 +1,28 @@
+// Global descriptor table setup header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef GDT_H
 #define GDT_H
 
-void gdt_set_gate(int num, unsigned long base, unsigned long limit, unsigned char access, unsigned char gran);
+struct gdt_entry
+{
+	unsigned short limit_low;
+	unsigned short base_low;
+	unsigned char base_middle;
+	unsigned char access;
+	unsigned char granularity;
+	unsigned char base_high;
+} __attribute__((packed));
 
+struct gdt_ptr
+{
+	unsigned short limit;
+	unsigned int base;
+} __attribute__((packed));
+
+void gdt_set_gate(int num, unsigned long base, unsigned long limit, unsigned char access, unsigned char gran);
 void gdt_install();
 
 #endif

src/kernel/idt.c

@@ -1,22 +1,12 @@
+// Interrupt descriptor table setup
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "idt.h"
 #include "system.h"
 #include "../libc/stdio.h"
 
-struct idt_entry
-{
-	unsigned short base_lo;
-	unsigned short sel;
-	unsigned char always0;
-	unsigned char flags;
-	unsigned short base_hi;
-} __attribute__((packed));
-
-struct idt_ptr
-{
-	unsigned short limit;
-	unsigned int base;
-} __attribute__((packed));
-
 struct idt_entry idt[256];
 struct idt_ptr idtp;
 

src/kernel/idt.h

@@ -1,8 +1,27 @@
+// Interrupt descriptor table setup header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef IDT_H
 #define IDT_H
 
-void idt_set_gate(unsigned char num, unsigned long base, unsigned short sel, unsigned char flags);
+struct idt_entry
+{
+	unsigned short base_lo;
+	unsigned short sel;
+	unsigned char always0;
+	unsigned char flags;
+	unsigned short base_hi;
+} __attribute__((packed));
 
+struct idt_ptr
+{
+	unsigned short limit;
+	unsigned int base;
+} __attribute__((packed));
+
+void idt_set_gate(unsigned char num, unsigned long base, unsigned short sel, unsigned char flags);
 void idt_install();
 
 #endif

src/kernel/io.h

@@ -1,5 +1,10 @@
-#ifndef INCLUDE_IO_H
-#define INCLUDE_IO_H
+// Raw CPU port I/O kernel module header 
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
+#ifndef IO_H
+#define IO_H
 
 #include <stdint.h>
 

src/kernel/io.s

@@ -1,17 +1,22 @@
+; Raw CPU port I/O kernel module
+; Author: xamidev
+; Licensed under the Unlicense. See the repo below.
+; https//github.com/xamidev/blankos
+
 global outb
 
 outb:
-  mov al, [esp + 8]
-  mov dx, [esp + 4]
-  out dx, al
-  ret
+    mov al, [esp + 8]
+    mov dx, [esp + 4]
+    out dx, al
+    ret
 
 global inb
 
 inb:
-  mov dx, [esp + 4]
-  in al, dx
-  ret
+    mov dx, [esp + 4]
+    in al, dx
+    ret
 
 global x86_div64_32
 

src/kernel/irq.c

@@ -1,3 +1,8 @@
+// Interrupt Requests setup
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "system.h"
 #include "io.h"
 #include "idt.h"

src/kernel/isr.c

@@ -1,3 +1,8 @@
+// Interrupt service routines setup 
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "system.h"
 #include "../libc/stdio.h"
 #include "idt.h"
@@ -37,7 +42,6 @@ extern void isr31();
 
 void isr_install()
 {
-
 	idt_set_gate(0, (unsigned)isr0, 0x08, 0x8E);
 	idt_set_gate(1, (unsigned)isr1, 0x08, 0x8E);
 	idt_set_gate(2, (unsigned)isr2, 0x08, 0x8E);
@@ -116,4 +120,3 @@ void fault_handler(struct regs *r)
 		for (;;);
 	}
 }
-

src/kernel/kheap.c

@@ -1,5 +1,9 @@
-#include "kheap.h"
+// Kernel heap management
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
+#include "kheap.h"
 #include <stdint.h>
 
 extern uint32_t end;

src/kernel/kheap.h

@@ -1,3 +1,8 @@
+// Kernel heap management header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef KHEAP_H
 #define KHEAP_H
 

src/kernel/loader.s

@@ -1,3 +1,8 @@
+; Kernel loader assembly stub and multiboot2 header
+; Author: xamidev
+; Licensed under the Unlicense. See the repo below.
+; https//github.com/xamidev/blankos
+
 global loader
 
 section .multiboot_header
@@ -6,9 +11,9 @@ align 8
 
 ; ASM macros
 
-MAGIC_NUMBER      equ 0xe85250d6  ; multiboot2 magic 
-FLAGS             equ 0x0	  ; 32-bit protected mode for i386
-HEADER_LEN	  equ 44 	  ;  Tags=2+2+4+4+4+4+2+2+4=28
+MAGIC_NUMBER      equ 0xe85250d6  	; multiboot2 magic 
+FLAGS             equ 0x0	  		; 32-bit protected mode for i386
+HEADER_LEN	  	  equ 44 	  		; Tags=2+2+4+4+4+4+2+2+4=28
 CHECKSUM          equ -(MAGIC_NUMBER + FLAGS + HEADER_LEN)
 
 ; Multiboot 2 header, according to specification (16bytes)
@@ -43,14 +48,12 @@ KERNEL_STACK_SIZE equ 4096
 extern kmain
 
 loader:
-  cli
-  ; mov eax, 0xCAFEBABE
-  ; push dword 42
-  push ebx
-  call kmain
+  	cli
+  	push ebx
+  	call kmain
 
 .loop:
-  jmp .loop
+  	jmp .loop
 
 global gdt_flush
 extern gp
@@ -206,5 +209,5 @@ irq_common_stub:
 section .bss
 align 4 
 kernel_stack:
-  resb KERNEL_STACK_SIZE
-  mov esp, kernel_stack + KERNEL_STACK_SIZE
+  	resb KERNEL_STACK_SIZE
+  	mov esp, kernel_stack + KERNEL_STACK_SIZE

src/kernel/paging.c

@@ -1,18 +1,19 @@
+// Paging kernel module
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include <stdint.h>
 #include "paging.h"
 #include "../libc/stdio.h"
 #include "system.h"
 #include "kheap.h"
 
-
 uint32_t *frames;
 uint32_t nframes;
 
 extern uint32_t placement_address;
 
-#define INDEX_FROM_BIT(a) (a/(8*4))
-#define OFFSET_FROM_BIT(a) (a%(8*4))
-
 static void set_frame(uint32_t frame_addr)
 {
 	uint32_t frame = frame_addr/0x1000;

src/kernel/paging.h

@@ -1,12 +1,21 @@
+// Paging kernel module header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef PAGING_H
 #define PAGING_H
 
 #include "system.h"
 #include <stdint.h>
+
+#define INDEX_FROM_BIT(a) (a/(8*4))
+#define OFFSET_FROM_BIT(a) (a%(8*4))
+
 typedef struct
 {
 	uint32_t present	: 1;
-	uint32_t rw		: 1;
+	uint32_t rw			: 1;
 	uint32_t user		: 1;
 	uint32_t accessed	: 1;
 	uint32_t dirty		: 1;

src/kernel/shell.c

@@ -1,3 +1,8 @@
+// Basic shell and commands kernel module
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "system.h"
 #include "../libc/stdio.h"
 #include "../libc/string.h"
@@ -6,8 +11,7 @@
 
 #define BUFFER_SIZE 256
 #define MAX_COMMANDS 16
-#define MAX_ARGS 64
-
+#define MAX_ARGS     64
 
 char* ascii_title =
 "\n"
@@ -17,7 +21,6 @@ char* ascii_title =
 "----------------------------------------------\n"
 "\n";
 
-
 typedef void (*command_func_t)(int argc, char *argv[]);
 
 typedef struct

src/kernel/sysinfo.c

@@ -1,3 +1,8 @@
+// System information kernel module
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "../libc/stdio.h"
 #include "../libc/string.h"
 

src/kernel/sysinfo.h

@@ -1,3 +1,8 @@
+// System information kernel module header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef SYSINFO_H
 #define SYSINFO_H
 

src/kernel/system.c

@@ -1,3 +1,8 @@
+// System utilities and routines kernel module
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "system.h"
 #include <stdint.h>
 

src/kernel/system.h

@@ -1,3 +1,8 @@
+// System utilities and routines kernel module header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef SYSTEM_H
 #define SYSTEM_H
 

src/libc/crypto.c

@@ -1,3 +1,8 @@
+// Cryptography routines for blankos/libc
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "crypto.h"
 #include <stdint.h>
 

src/libc/crypto.h

@@ -1,3 +1,8 @@
+// Cryptography routines for blankos/libc header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef CRYPTO_H
 #define CRYPTO_H
 

src/libc/ctype.c

@@ -1,3 +1,7 @@
+// Ctype implementation for blankos/libc
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -7,7 +11,6 @@ bool isdigit(char c)
 	return c >= '0' && c <= '9';
 }
 
-
 bool isspace(char c)
 {
 	return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r';

src/libc/ctype.h

@@ -1,3 +1,8 @@
+// Ctype implementation for blankos/libc header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef CTYPE_H
 #define CTYPE_H
 

src/libc/stdio.c

@@ -1,3 +1,8 @@
+// Standard input/output implementation for blankos/libc
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "../kernel/io.h"
 #include "stdio.h"
 #include "string.h"
@@ -10,9 +15,6 @@ extern uint32_t* framebuffer;
 extern uint32_t VGA_WIDTH; 
 extern uint32_t VGA_HEIGHT;
 unsigned int VGA_X = 0, VGA_Y = 0;
-
-#define CURSOR_WIDTH  8
-#define CURSOR_HEIGHT 16
 extern int scanline;
 
 void draw_cursor(uint32_t color)

src/libc/stdio.h

@@ -1,17 +1,24 @@
-#ifndef INCLUDE_STDIO_H
-#define INCLUDE_STDIO_H
+// Standard input/output implementation for blankos/libc header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
+#ifndef STDIO_H
+#define STDIO_H
 
 #include <stdint.h>
 #include <stdbool.h>
 
-#define FB_GREEN      2
-#define FB_DARK_GREY  8
+#define FB_GREEN      	  2
+#define FB_DARK_GREY  	  8
 
 #define FB_CMD_PORT       0x3D4
 #define FB_DATA_PORT      0x3D5
 #define FB_HIGH_BYTE_CMD  14
 #define FB_LOW_BYTE_CMD   15
 
+#define CURSOR_WIDTH  	  8
+#define CURSOR_HEIGHT     16
 
 void draw_cursor(uint32_t color);
 void erase_cursor();
@@ -27,24 +34,23 @@ unsigned int getcolor(int x, int y);
 void putc(char c);
 void colorputc(char c, uint32_t fg, uint32_t bg);
 
-#define PRINTF_STATE_START 		0
+#define PRINTF_STATE_START 			0
 #define PRINTF_STATE_LENGTH 		1
-#define PRINTF_STATE_SHORT 		2
-#define PRINTF_STATE_LONG 		3
-#define PRINTF_STATE_SPEC 		4
-#define PRINTF_STATE_WIDTH 		5
+#define PRINTF_STATE_SHORT 			2
+#define PRINTF_STATE_LONG 			3
+#define PRINTF_STATE_SPEC 			4
+#define PRINTF_STATE_WIDTH 			5
 
 #define PRINTF_LENGTH_START 		0
 #define PRINTF_LENGTH_SHORT_SHORT 	1
 #define PRINTF_LENGTH_SHORT 		2
-#define PRINTF_LENGTH_LONG 		3
+#define PRINTF_LENGTH_LONG 			3
 #define PRINTF_LENGTH_LONG_LONG 	4
 
 void printf(const char* fmt, ...);
 int* printf_number(int* argp, int length, bool sign, int radix, int width, char pad_char);
 int getch();
 void get_input(char *buffer, int size);
-
 void dtostrf(double val, char *buffer, int precision);
 
 enum Colors

src/libc/string.c

@@ -1,3 +1,8 @@
+// String operations implementation for blankos/libc
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include <stdint.h>
 #include "../kernel/system.h"
 

src/libc/string.h

@@ -1,5 +1,10 @@
-#ifndef INCLUDE_STRING_H
-#define INCLUDE_STRING_H
+// String operations implementation for blankos/libc header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
+#ifndef STRING_H
+#define STRING_H
 
 int strlen(const char* str);
 int strcmp(const char* str1, const char* str2);

src/programs/bf.c

@@ -1,3 +1,7 @@
+// Simple brainfuck interpreter program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
 #include "../kernel/system.h"
 #include "../libc/stdio.h"

src/programs/ciphers.c

@@ -1,5 +1,12 @@
+// Cipher programs
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "../libc/stdio.h"
 #include "ciphers.h"
+#include "../libc/string.h"
+#include <stdint.h>
 
 void rot13(char* input, char* output)
 {
@@ -32,9 +39,6 @@ void program_rot13()
 	printf("\n%s\n", output);
 }
 
-#include "../libc/string.h"
-#include <stdint.h>
-
 const char* morse_alphabet[] = {
     ".-",   // A
     "-...", // B

src/programs/ciphers.h

@@ -1,3 +1,8 @@
+// Cipher programs header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef CIPHERS_H
 #define CIPHERS_H
 

src/programs/conway.c

@@ -1,3 +1,8 @@
+// Conway's Game of Life program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include "conway.h"
 #include "../libc/stdio.h"
 #include "../kernel/system.h"

src/programs/conway.h

@@ -1,3 +1,8 @@
+// Conway's Game of Life program header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef CONWAY_H
 #define CONWAY_H
 

src/programs/math.c

@@ -1,4 +1,7 @@
-// Math expression lexer and parser
+// Basic math expression lexer and parser program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
 #include <stdint.h>
 #include "../kernel/system.h"

src/programs/misc.c

@@ -1,4 +1,7 @@
 // Miscellaneous small programs
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
 #include "../libc/stdio.h"
 #include "../kernel/system.h"
@@ -30,7 +33,7 @@ void program_rainbow()
 
 void program_clear()
 {	
-	for (int i=0; i<ROWS; i++) scroll();
+	clear();
 }
 
 // Get uptime in ticks
@@ -38,7 +41,7 @@ void program_clear()
 void program_uptime()
 {
 	int ticks = uptime();
-	double seconds = ticks/18.2065; // PIC channel 0 freq
+	double seconds = ticks/18.2065; // PIT channel 0 freq
 	printf("%d ticks\t%f seconds\n", ticks, seconds);
 }
 

src/programs/primes.c

@@ -1,3 +1,8 @@
+// Prime number computation program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #include <stdint.h>
 #include "../libc/stdio.h"
 #include "../kernel/system.h"

src/programs/programs.h

@@ -1,3 +1,8 @@
+// Global program entry points header
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
+
 #ifndef PROGRAMS_H
 #define PROGRAMS_H
 
@@ -22,4 +27,5 @@ void program_uptime();
 void program_panic();
 void program_help();
 void program_echo();
+
 #endif

src/programs/sysinfo.c

@@ -1,3 +1,7 @@
+// System information program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
 #include "../kernel/sysinfo.h"
 #include "../libc/stdio.h"

src/programs/words.c

@@ -1,3 +1,7 @@
+// Pseudo-random word generation program
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https//github.com/xamidev/blankos
 
 #include "../libc/stdio.h"
 #include "../libc/crypto.h"
@@ -37,7 +41,7 @@ char* words[] =
 
 int words_size = sizeof(words)/sizeof(words[0]);
 
-// Generates 5 random words
+// Generates random words
 void program_words()
 {
 	for (int i=0; i<10; i++)